#include <47func.h>
int main(int argc, char *argv[])
{
    // ./4_server 192.168.118.128 1234
    ARGS_CHECK(argc,3);
    int sockfd = socket(AF_INET,SOCK_STREAM,0);
    // AF_INET ipv4 SOCK_STREAM TCP
    struct sockaddr_in serverAddr;//带in 是ipv4地址 带in6是ipv6地址 不带是通用地址
    serverAddr.sin_family = AF_INET;//ipv4
    serverAddr.sin_addr.s_addr = inet_addr(argv[1]);//把点分十进制的ip地址转换成32位大端存储的地址
    serverAddr.sin_port = htons(atoi(argv[2]));//把端口用大端存储
    int ret = bind(sockfd,(struct sockaddr *)&serverAddr,sizeof(serverAddr));
    ERROR_CHECK(ret,-1,"bind");
    ret = listen(sockfd,10);
    ERROR_CHECK(ret,-1,"listen");
    //sleep(100);
    struct sockaddr_in clientAddr;
    socklen_t clientAddrSize = sizeof(clientAddr);//一定要赋予初值
    int netfd = accept(sockfd,(struct sockaddr *)&clientAddr,&clientAddrSize);
    // sockfd专门用来建立连接 netfd负责和客户端的数据通信
    printf("addrlen = %d\n",clientAddrSize);
    printf("client sin_family = %d\n",clientAddr.sin_family);
    printf("client ip = %s\n", inet_ntoa(clientAddr.sin_addr));
    printf("client port =%d\n", ntohs(clientAddr.sin_port));
    sleep(1);
    char buf[1024] = {0};
    ssize_t sret = recv(netfd,buf,1024,0);
    ERROR_CHECK(sret,-1,"recv");
    printf("buf = %s\n", buf);
    return 0;
}

